Vcarrick...good luck with you surgery! I'm so excited for mine!
As far as the family issue (if they aren't supportive) tell them like I told mine. They had told me my entire life I was fat and needed to loose weight, and now that I'm doing something drastic to remedy the problem they DO NOT get to criticize it!!! If they can't be supportive they don't get an opinion!!
You do what makes you happy!